Strain Relief
Mechanical element that prevents cable pulling forces and movement from being transferred to conductors, terminals and electrical contacts.
A strain-relief device grips the cable sheath or body so that external mechanical force is not transmitted directly to conductors and contact points.
It may be implemented as a clamp, bracket, rail, comb, tie or as an integrated part of a cable gland or connector. The retention method has to suit cable diameter, sheath material and flexibility.
Important parameters include retention force, resistance to vibration and repeated movement, and the effect of clamping on minimum bending radius. Excessive pressure should not damage the cable sheath.
Selection should consider cable diameter range, expected mechanical load, mounting method, service frequency, vibration conditions and bending-radius requirements.
Strain-relief clamps and cable retention systems for cabinets and machines.
Strain Relief
General3
Commercial or technical designation of a manufacturer's product family sharing a common design and compatible characteristics.
Range of tasks and systems for which the manufacturer recommends the component.
Primary function of the device and its intended use as defined by its design and the manufacturer's documentation.
Dimensions6
External horizontal dimension of the product between its outermost lateral points.
External vertical dimension of the product from its lowest to its highest point.
External distance between the foremost and rearmost surfaces of the product.
External linear dimension of the product along its longitudinal direction or principal length axis.
Transverse dimension of a product or its circular element measured through the centre between opposite points of the circumference.
Mass of the product itself, excluding transport packaging, additional accessories, and external equipment.
Mounting and Installation8
Method used to mechanically secure the product to a support, surface, or load-bearing structure.
Installation arrangement permitted by the product design, such as wall-mounted, flush-mounted, floor-mounted, or another specified mounting type.
Permissible spatial orientation of the component during installation and operation.
Indicates whether the design provides for mounting equipment on a DIN rail.
Number of holes provided in the product for mechanical fixing.
Diameter of the hole provided for a fixing element used when mounting the product.
Distance between the centres of mounting holes in the horizontal direction.
Distance between the centres of mounting holes in the vertical direction.
Cable Entries4
Minimum external diameter of a cable compatible with the specified entry system.
Maximum external diameter of a cable compatible with the specified entry system.
Manufacturer-declared axial cable retention or pull-out force of the cable termination or strain-relief system.
Mechanical construction used to transfer cable tensile or bending loads away from electrical terminations.
Environmental Conditions10
Degree of enclosure protection against access to hazardous parts and ingress of solid objects and water, designated by the IP code.
Class of enclosure resistance to external mechanical impacts designated by the IK code.
Minimum ambient temperature at which normal operation of the product is permitted.
Maximum ambient temperature at which normal operation of the product is permitted.
Minimum ambient temperature permitted during storage of the product while not in operation.
Maximum ambient temperature permitted during storage of the product while not in operation.
Minimum relative air humidity permitted for the declared operating or test condition.
Maximum relative air humidity permitted for the declared operating or test condition.
Indicates whether the product's resistance to vibration has been verified under the declared conditions.
Indicates whether the product's resistance to short-duration mechanical shocks has been verified.
Standards and Compliance4
Indicates whether the CE marking is applied to the product where applicable.
Indicates whether product compliance with applicable RoHS restrictions on hazardous substances has been declared.
Indicates whether the manufacturer declares product compliance with IEC 60529.
Indicates whether the product has been tested according to applicable methods of the IEC 60068 series.